• Protocol : Bluetooth 5 (2.4GHz ISM band) – requires Nuki Smart Lock 3.0 or Pro
• Detection : Open/Closed (magnet distance/sensor 0.5-3 cm)
• Power supply : 3.6V lithium battery ER14250 ½ AA (included, battery life ~2 years)
• Dimensions : Sensor 40×21×18.7 mm / Magnet 19×19×7 mm
• Weight : 22 g (sensor)
• Installation : Adhesive 3M (without screws/drilling, inner door side)
• Bluetooth scope : ≤10 m (depends on environment)
• Temperature : +10°C to +40°C (indoor only)
• Functions : Open/Closed, Low battery, Sabotage detection, Door notification open too long
• Compatibility : Nuki Smart Lock 3.0/3.0 Pro only (1.0/2.0 not compatible)
• Warranty : 2 years

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